Dental polishing device.



J.- D. COREY.- DEN'I'AL POLISHING DEVICE. APPLICATION FILED 001.11,1910.

Patented Aug. 8, 1911.

. .TeJ'J'e l). Caney INVENTOR ATTORNEY pisiran snares rarest @FFiQE.

JESSE D. CONEY, OF WILLIAMSPORT, PENNSYLVANIA, ASSIGNOR T0 JAMES IVORY,0F PHILADELPHIA, PENNSYLVANIA.

DENTAL POLISHING DEVICE.

Specification of Letters Patent.

Patented Aug. 8, 1 911.

To all whom it may concern:

Be it known that I, JESSE D. CONEY, a citizen of the United States,residing at W'illiamsport, in the county of Lycoming and State ofPennsylvania, have invented a new and useful Dental Polishing Device, ofwhich the following is a specification.

The invention relates to improvements in dental polishing devices.

The object of the present invention is to improve the construction ofdental polishing devices, and to provide a simple, efficient andinexpensive polishing device, capable of use in the hand piece of anordinary dental engine and designed for cleaning natural teeth in themouth of a patient, and adapted to hold a quantity of abrasive orpolishing material to facilitate the application of the same to theteeth operated on.

A further object of the invention is to provide a polishing device ofthis-character, equipped with means for stiffening soft rubber, cork orother material and for preventing the same from breaking out at thesides.

Vith these and other objects in view, the invention consists in theconstruction and novel combination of parts hereinafter fully described,illustrated in the accompanying drawing, and pointed out in the claimshereto appended; it being understood that various changes in the form,proportion, size and minor details of construction, within the scope ofthe claims, may be resorted to without departing from the spirit orsacrificing any of the advantages of the invention.

In the drawing :Figure 1 is a side elevation of a dental polishingdevice, constructed in accordance with this invention; Fig.

2 is a central longitudinal sectional view ofthe same. Fig. 3 is adetail sectional view, illustrating the construction of the socket.Figs. 4, 5 and 6 are detail perspective views, showing different formsof polishing heads.

Like numerals of reference designate corresponding parts in all thefigures of the drawing.

In the embodiment of the invention illustrated in the accompanyingdrawing, 1 designates a dental polishing head, designed for cleaningnatural teeth in the mouth of a patient, and constructed of soft rubber,cork, or any other suitable material, and provided at its inner portionwith a cylindrical shank 2 to fit within an interiorily threaded socket3. The socket 3, which is constructed of metal, or any other suitablematerial, consists of a cylindrical outer portion having interior screwthreads 4 and an inner tapered portion 5, having an end wall or bottom-5 provided with a central perforation 6 for the passage of a screw 7.The shank of the soft material when screwed into the socket is engagedby the threads 4 and is spirally indented by the same, as clearlyillustrated in Fig. 2 of the drawing. The socket not only assists inholding the polishing head in place, but it reinforces the same andprevents the polishing head from breaking out at the sides.

The screw 7 consists of outer and inner portions 8 and 9, and it isprovided at the juncture of the same with a head or collar 10, whichfits against the end of the shank of the polishing head. The polishinghead is provided with a longitudinal opening 11 to receive the threadedouter portion 8, which is preferably provided with coarse threadsanalogous to those of. a. wooden screw for engaging the polishing head.The outer portion 8 of the screw extends centrally through the polishinghead from one end of the shank to within a short distance of the outerend of the polishing head, and it is adapted to stifien and support thesame. The inner threaded portion 9 passes through the opening 6 in theinner end wall or bottom of the socket 3 and extends into an interiorlythreaded bore or opening 12 of a mandrel 13. The bore or opening 12 iscentrally arranged and extends inward from the outer end 14 of themandrel. The outer end 14 is provided with a flat end face to fit theend wall or bottom of the socket, and it is preferably tapered inwardly,as shown. The inner end 15 of the mandrel is of the usual constructionto fit in the hand piece of an ordinary dental engine. lVhen the partsare assembled and the mandrel is screwed against the end wall of thesocket, it operates to draw the screw inwardly and creates a pressure atthe outer threaded portion of the screw, and also at the threads of thesocket, which results in firmly securing the polishing head in place.The screw threads are shown right handed, so that the forward rotationdue to the action of the dental drill will tend to tighten the partsinstead of unscrewing the same, but they may be made either right orleft handed to correspond with the direction of rotation of theactuating member.

The polishing heads may be of different shapes. As illustrated in Figs.1 to 4 inclusive, the polishing head 1 is provided with a concave outerend face 16, forming a cup-shaped recess, adapted to hold a quantity ofpumice, emery dust, or other abrasive or polishing material to enablethe same to be readily applied to the teeth, and the side faces 17 ofthe polishing head 1 are concave, forming a tapered projectingperipheral edge to adapt the polishing head for cleaning between thesides of the teeth where the latter are more or less close together. Thepolishing head 18, illustrated in Fig. 5 of the drawing, has acup-shaped concavity 19 in its outer end, and is provided with acylindrical side face 20 for cleaning the front and inner sides of theteeth. A conical polishing head 21 is illustrated in Fig. 6 of thedrawing, and is designed for cleaning the teeth near the gum margins.

Having thus fully described my invention, what I claim as new and desireto se cure by Letters Patent, is

1. A polishing device of the class described including a socket, apolishing head having a shank fitted in the socket and held by the wallsthereof, a mandrel abutting against the exterior of the inner end of thesocket, and a fastening device connecting the mandrel with the socketand extending into the same and into the shank of the polishing head.

2. A polishing device of the class described including a socket, amandrel having a threaded opening and fitted against the socket, apolishing head having a shank ar ranged within the socket, and a screwhaving inner and outer threaded portions, the outer threaded portionengaging the polishing head and the inner threaded portion be ingextended through the socket and engaging the threaded opening of themandrel.

A polishing device of the class de- Copies of this patent may beobtained for five cents each, by addressing the Commissioner of Patents.

scribed including an interiorly threaded cylindrical socket, a mandrelfitted against the inner end of the socket and having a threadedopening, a polishing head provided with a cylindrical shank of softmaterial screwed into the socket, the threads of the socket beingembedded in the soft mate rial of the shank, and a screw having innerand outer threaded portions, the outer threaded portion being extendedinto the polishing head and the inner threaded portion being extendedthrough the inner end of the socket and engaging the threaded opening ofthe mandrel and securing the latter and the socket together.

4. A polishing device of the class described including a socket havingan inner end wall or bottom provided with an opening. a polishing headhaving a portion fitted within the socket, a mandrel having a threadedopening and provided with an en larged outer end fitting against theinner end of the socket, and a screw having inner and outer threadedportions, the inner threaded portion being extended through the openingof the socket and engaging the threaded opening of the mandrel.

5. A polishing device of the class described including a socket, a solidpolishing head having an integral shank fitted in the socket and held bythe walls thereof, said polishing head being also provided with aconcave face forming a cup-shaped recess extending entirely across theend of the polishing head to the periphery thereof and adapted to holdpolishing material, the sides of the polishing head beyond the socket being concave and forming at the juncture of the end and the sides aprojecting peripheral polishing portion.

In testimony that I claim the foregoing as my own, I have hereto affixedmy signature in the presence of two witnesses.

JESSE D. CONEY.

IVitnesses:

GEORGE L. Bums, VV'iLrnnn M. DANLEY.

Washington, D. G.

